'93 was the first year for the LT-1 so I think that high mounted alt bracket is stock.
The small braided hose on the top of pic goes to the steam tube at the back of the engine.
The small hose on the bottom of the pic goes to the top of the thermostat housing. I'm replacing all the braided hoses with plain black hoses. I think the p.o. repainted the exhaust manifolds with some special "coating".
the only other engine pic I have right now